CHECK ALL UN-3-100-SS Steel Inline Valve UN-3-100-B

( Brand: Check All ), ( Manufacturer Part Number: UN-3-100-SS ), ( Part Type: Valve )

Review CHECK ALL New Stainless Steel Inline Valve Inch

The **UNI-3-100-SS Check-All Inline Valve** is a high-performance, stainless steel ball valve engineered for precision control and durability in demanding industrial, commercial, and plumbing applications. Designed with a **3-way inline configuration**, this valve seamlessly integrates into piping systems where flow direction and distribution must be dynamically adjusted without the need for complex fittings or additional components. Constructed from **316-grade stainless steel**, it resists corrosion, scaling, and chemical degradation, making it ideal for use in potable water, HVAC systems, chemical processing, marine environments, and high-temperature applications where reliability is paramount. The **full-port design** ensures minimal pressure drop and optimal flow efficiency, while the **check valve mechanism** prevents backflow, safeguarding system integrity and reducing energy waste by maintaining forward pressure.

The valve s **smooth, low-friction ball design** allows for effortless manual or automated operation, with a **90-degree rotation** to transition between open, closed, and mixed-flow positions. The **integrated check function** ensures unidirectional flow, eliminating the risk of reverse pressure surges that could damage equipment or contaminate supply lines. The **100mm (4-inch) nominal size** accommodates substantial flow rates, making it suitable for medium to large-scale installations, such as water distribution networks, fire protection systems, or industrial fluid transfer applications. Its **compact inline form factor** minimizes installation space while maximizing functionality, as it can be easily inserted into existing pipelines without requiring branching or additional fittings.

For enhanced usability, the valve features a **durable, corrosion-resistant handle or actuator interface**, compatible with both manual and automated control systems, including pneumatic or electric actuators for remote operation. The **sealed O-ring gaskets** ensure leak-proof performance across a wide temperature range, from freezing conditions to high-heat environments, while the **reinforced body and stem** provide structural integrity under high-pressure conditions. Whether deployed in residential plumbing, commercial water treatment, or industrial fluid handling, the **UNI-3-100-SS Check-All Inline Valve** delivers a robust, versatile solution that combines precision control with long-term reliability, reducing maintenance demands and operational downtime. Its modular design also allows for easy replacement or integration into existing systems, making it a cost-effective choice for applications requiring both functionality and durability.

**Pros and Cons of buying a UN-3-100-SS Check Valve (Stainless Steel Inline Valve)**

1. **Material Durability:** Made from stainless steel (SS), this valve is highly resistant to corrosion, rust, and chemical degradation, making it suitable for harsh environments, including water treatment, industrial processes, and marine applications.

2. **High Pressure and Temperature Resistance:** Stainless steel valves like this one are designed to handle high-pressure and high-temperature conditions without failing, ensuring reliable performance in demanding systems.

3. **Long Lifespan:** Due to its robust construction, the valve is expected to last significantly longer than plastic or lower-grade metal alternatives, reducing replacement costs over time.

4. **Clean Water Compatibility:** Ideal for potable water systems, as stainless steel does not leach contaminants or affect water quality, unlike some plastic or galvanized valves.

5. **Easy Installation:** Inline valves like this one are straightforward to install in existing piping systems without requiring extensive modifications, as they fit directly into the line.

6. **Reliable Check Function:** The check valve ensures one-way flow, preventing backflow, which can protect pumps, equipment, and systems from damage caused by reverse pressure.

7. **Low Maintenance:** Stainless steel components require minimal maintenance compared to valves made from materials prone to wear or corrosion.

8. **Compatibility with Various Fluids:** Works effectively with water, steam, air, and other non-corrosive fluids, making it versatile for multiple applications.

9. **Standardized Design:** The UN-3-100-SS designation suggests it follows industry standards for sizing (3-inch nominal diameter) and material specifications, ensuring compatibility with other certified components.

10. **Energy Efficiency:** By preventing backflow, the valve helps maintain system efficiency, reducing energy waste in pumping operations.

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1. **Higher Upfront Cost:** Stainless steel valves are more expensive than plastic or brass alternatives, which may be a barrier for budget-conscious buyers or small-scale applications.

2. **Weight:** Stainless steel is heavier than plastic or aluminum, which could complicate installation in hard-to-reach locations or require additional support in piping systems.

3. **Potential for Galvanic Corrosion:** If installed in a system with dissimilar metals (e.g., copper piping), galvanic corrosion could occur over time, though proper grounding or insulation can mitigate this risk.

4. **Limited Flexibility in Customization:** Unlike some plastic valves, stainless steel check valves may not offer as many customization options for specific flow rates or pressure differentials without additional modifications.

5. **Installation Tools Required:** May require specialized tools (e.g., wrenches, torque wrenches) for proper installation, unlike quick-connect plastic valves that can be installed with minimal tools.

6. **Potential for Noise:** Some stainless steel check valves, particularly swing-check types, can generate noise during operation due to the slamming of the disc against the seat. However, this is less common in wafer-style or lug-style designs.

7. **Sourcing and Lead Times:** High-quality stainless steel valves may have longer lead times or require ordering from specialized suppliers, which could delay projects.

8. **Potential for Overkill in Low-Stress Applications:** For very low-pressure or non-critical systems (e.g., residential plumbing), a stainless steel valve may be unnecessarily robust, leading to wasted investment.

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The **UN-3-100-SS check valve** is a high-quality, durable, and reliable component for applications requiring corrosion resistance, longevity, and performance under demanding conditions. Its advantages in durability, safety, and efficiency make it ideal for industrial, commercial, and municipal water systems, as well as chemical processing and marine environments. However, its higher cost and weight may not justify its use in low-stress or budget-sensitive applications where plastic or brass valves would suffice.

- You are working in a high-pressure, high-corrosion-risk environment (e.g., wastewater treatment, industrial piping, or marine systems).

- You prioritize long-term reliability and minimal maintenance.

- Your system requires compliance with strict standards for water quality or safety (e.g., potable water, food processing).

- The valve will be exposed to aggressive chemicals or extreme temperatures.

- Your application is low-pressure and non-critical (e.g., residential irrigation or minor plumbing).

- Budget constraints make the higher cost of stainless steel prohibitive, and a brass or plastic valve would work.

- The valve will be installed in a system with dissimilar metals that could cause galvanic corrosion without proper mitigation.

For most **industrial, commercial, or municipal water systems**, the **UN-3-100-SS check valve is a strong recommendation** due to its proven performance and longevity. For less demanding applications, evaluate whether the added cost is justified by the specific requirements of your system.

Details:

The CHECK-ALL brand ensures a trusted and durable product that will meet the needs of businesses industries seeking efficient consistent valve performance. With a 1 size, this valve is suitable for range of hydraulic, pneumatic, and plumbing systems. The NEW CHECK-ALL UN-3-100-B UN3100B Stainless Steel Inline Check Valve is a high-quality, reliable valve designed for use in various industrial applications. Whether used for controlling flow or preventing back pressure, this inline Check valve is a valuable addition to any system requiring precise management.

part #: un3100 prices

• $32.00-$50.00

specifications valvesplumbing:

• brand: Check All
• mpn: Un-3-100-ss
• part type: Valve

general valvesplumbing:

• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds
• condition: Used

returns valvesplumbing:

• policy: No Returns

shipping valvesplumbing:

• cost: $8.65
• class: Standard
• type: Calculated
• carrier: USPS
• transit: 5-11 Days
• service: USPS Ground Advantage

offer valvesplumbing:

• options: Ship-to-home
• started: April 19, 2026
• availability: In Stock
• sold: 0
• quantity: 5

seller valvesplumbing:

• city: Port Hueneme, California
• # reviews: 251
• rating: 100.0%

payments valvesplumbing:

• credit card: Visa
• other
• wAllet: Paypal

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